Sheet-metal roofing.



No; Ma ama Patented Nov. 28,, I899.

H, o. REESE. SHEET METAL ROOFING.

(Application filed Sept. 16, 1899.)

(Mr Mad-ah) aw/3M WITNEEIEEE TNITED STATES PATENT OFFICE.

HENRY O. REESE, OF BALTIMORE, MARYLAND;

SHEET-METAL ROOFING.

SPECIFICATION forming part of Letters Patent No. 638,064, dated November28, 1899 Application filed September 16, 1899. Serial No. 730,684. (Nomodeh) To all whom it may concern.-

Be it known that l, HENRY O. REESE, acitizen of the United States,residing at Baltimore, in the State of Maryland, have invented certainnew and useful Improvements in Sheet-Metal Roofing, of which thefollowing is a specification.

This invention relates to an improved standing joint for tin roofs.

The object of the invention is to provide an improved form of standingexpansible joint for metal roofs, first, that will admit of beingreadily soldered; second, that will always be easy of inspection todetect defects and readily repaired when defects are found to exist;third, whose formation will be such as not to break or crack the metalat the cross-seams; fourth, which, while comparatively low in its upwardprojection, will have no turned-down folds below which dirt and moisturemay accumulate to cause rust, and, finally, fifth, which requires nomore metal for its formation than has heretofore been used in ordinarystanding joints.

Referring to the accompanying drawings, Figure 1 shows several adjoiningstrips of tin roofing with upturned edges for forming standing jointsand also showing one of my improved joints formed. Fig. 2 is acrosssection of a portion of two adjoining strips of tin-plate withupturned edges in proper position for the first step in the formation ofthe joint. Fig. 3 is a similar view and illustrates the first fold. Fig.a is a similar View and illustrates the position of the parts in thefinished joint. Fig. 5 is a perspective view of the finished joint dulysoldered.

The letters 0 and O designate two adjoining strips of tin roofing withedges upturned in readiness for the formation of the joint. It will benoticed that in the initial stage the turned-up edge a of one strip 0stands higher than the turned-up edge I) of the other strip 0. Informing the joint the first fold is made by turning the higher edge aover thelower edge I) and then downward somewhat, as seen in Fig. 3. Thesecond operation consists in bending both upturned edges a b at a properpoint at a little below the cut down edge of the first fold in adirection reverse from the first fold and leaving it projectinglaterally and inclined downwardly, as shown in Fig. 4. This operationplaces the cut edge,which in the first fold was pointing downward, as inFig. 3, in an inclined upward position, and the second bend at disrounded instead of abrupt. When a folded joint on a roof has thisinclined flange e projecting laterally from the vertical or upstandingpart, it maybe readily inspected and is accessible to the tools used forclosing it. The cut edge of the first fold is on top of the inclinedflange e, where solder may be easily applied. The lateral position ofthe flange enables the metal of the seam parts to be heated by thesoldering-tools, and the inclined position of the flange causes thesolder to flow down and sweat into the folded seam parts, all of whichinsures a tightly-soldered joint. The solder is designated by the letterfin the finished joint. (Shown in Fig. 5.) This construction of jointadmits the use of cleats of the same kind that are commonly employedwith ordinary standing joints for anchoring or fastening tin roofs tothe wooden structure. A standing expansible joint of this constructionwill not have hurtful breaks or cracks in the metal at the cross-seams9, because the exposed bend cl of this joint is gradually rounded andnot abrupt.

As the finished joint has an inclined flange projecting laterally fromthe standing part, there is an open space beneath the joint whereinwater during rain-storms will freely flow and which will consequently bekept clean of dirt and will dry, and thereby avoid the production ofrust.

Another advantage of this form of finished joint for roof-seams is thatthe inclined flange projecting laterally serves to greatly stiifen andstrengthen the standing joint.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

In a sheet-metal roof having a standing joint uniting two adjoiningstrips, the combination of a rounded bend in both upturned adjoiningedges forming a down -inclined flange projecting laterally from thestanding part; a fold of the lower sheet metal of the said flange upwardand over the edge of the upper sheet metal of said flange with the cutedge terminating on top; and solder on top of the flange and coveringsaid out edge and also sweated into the joint, as set forth.

In testimony whereof I afiix my signature in the presence of twowitnesses.

HENRY O. REESE.

Witnesses:

CHARLES E. MANN, Jr., CHARLES VIE'rsoH.

